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MODEL TOX-REFRIG/ANA GUIDE SPECIFICATION FOR REFRIGERANT SENSOR |
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Provide a Toxalert model Tox-Refrig/ANA refrigerant leak detection sensor
to monitor for refrigerant leaks. The sensing element shall be a solid state
metal oxide semiconductor for long life and stability. The sensor shall be
powered by 24 vdc. Sensor range shall be (*) and have a 4 to 20 mA output
signal. When the sensor detects a malfunction it shall drive its output to
zero to signal the controller of a sensor failure. The sensor shall also have
an LED to indicate sensor fault condition.
The sensor shall be housed in an explosion proof housing and have two meter terminal connections on the face of the unit for ease of checking unit calibration. The refrigerant leak detection system shall be as manufactured by Toxalert International, Inc. or approved by this specifying engineer. (*) Note -- the range for R-123 is 0 to 50 PPM. The range for all other major refrigerants is 0 to 300 PPM.
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